/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
*/
#include <sys/zfs_context.h>
#include <sys/arc.h>
#include <sys/zil.h>
#include <sys/dsl_scan.h>
+#include <sys/zvol.h>
/*
* Virtual device management.
NULL
};
-/* maximum scrub/resilver I/O queue per leaf vdev */
-int zfs_scrub_limit = 10;
-
/*
* Given a vdev type, return the appropriate ops vector.
*/
vdev_t *pvd = vd->vdev_parent;
/*
- * The our parent is NULL (inactive spare or cache) or is the root,
+ * If our parent is NULL (inactive spare or cache) or is the root,
* just return our own asize.
*/
if (pvd == NULL)
pvd->vdev_children = MAX(pvd->vdev_children, id + 1);
newsize = pvd->vdev_children * sizeof (vdev_t *);
- newchild = kmem_zalloc(newsize, KM_SLEEP);
+ newchild = kmem_zalloc(newsize, KM_PUSHPAGE);
if (pvd->vdev_child != NULL) {
bcopy(pvd->vdev_child, newchild, oldsize);
kmem_free(pvd->vdev_child, oldsize);
if (pvd->vdev_child[c])
newc++;
- newchild = kmem_alloc(newc * sizeof (vdev_t *), KM_SLEEP);
+ newchild = kmem_alloc(newc * sizeof (vdev_t *), KM_PUSHPAGE);
for (c = newc = 0; c < oldc; c++) {
if ((cvd = pvd->vdev_child[c]) != NULL) {
vdev_t *vd;
int t;
- vd = kmem_zalloc(sizeof (vdev_t), KM_SLEEP);
+ vd = kmem_zalloc(sizeof (vdev_t), KM_PUSHPAGE);
if (spa->spa_root_vdev == NULL) {
ASSERT(ops == &vdev_root_ops);
spa->spa_root_vdev = vd;
+ spa->spa_load_guid = spa_generate_guid(NULL);
}
if (guid == 0 && ops != &vdev_hole_ops) {
&vd->vdev_removing);
}
- if (parent && !parent->vdev_parent) {
+ if (parent && !parent->vdev_parent && alloctype != VDEV_ALLOC_ATTACH) {
ASSERT(alloctype == VDEV_ALLOC_LOAD ||
alloctype == VDEV_ALLOC_ADD ||
alloctype == VDEV_ALLOC_SPLIT ||
svd->vdev_ms_shift = 0;
svd->vdev_ms_count = 0;
+ if (tvd->vdev_mg)
+ ASSERT3P(tvd->vdev_mg, ==, svd->vdev_mg);
tvd->vdev_mg = svd->vdev_mg;
tvd->vdev_ms = svd->vdev_ms;
mvd->vdev_asize = cvd->vdev_asize;
mvd->vdev_min_asize = cvd->vdev_min_asize;
+ mvd->vdev_max_asize = cvd->vdev_max_asize;
mvd->vdev_ashift = cvd->vdev_ashift;
mvd->vdev_state = cvd->vdev_state;
mvd->vdev_crtxg = cvd->vdev_crtxg;
ASSERT(oldc <= newc);
- mspp = kmem_zalloc(newc * sizeof (*mspp), KM_SLEEP);
+ mspp = kmem_zalloc(newc * sizeof (*mspp), KM_PUSHPAGE | KM_NODEBUG);
if (oldc != 0) {
bcopy(vd->vdev_ms, mspp, oldc * sizeof (*mspp));
kmem_free(vd->vdev_ms, count * sizeof (metaslab_t *));
vd->vdev_ms = NULL;
}
+
+ ASSERT3U(vd->vdev_pending_fastwrite, ==, 0);
}
typedef struct vdev_probe_stats {
mutex_enter(&vd->vdev_probe_lock);
if ((pio = vd->vdev_probe_zio) == NULL) {
- vps = kmem_zalloc(sizeof (*vps), KM_SLEEP);
+ vps = kmem_zalloc(sizeof (*vps), KM_PUSHPAGE);
vps->vps_flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_PROBE |
ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_AGGREGATE |
vd->vdev_open_thread = NULL;
}
-boolean_t
+static boolean_t
vdev_uses_zvols(vdev_t *vd)
{
-/*
- * Stacking zpools on top of zvols is unsupported until we implement a method
- * for determining if an arbitrary block device is a zvol without using the
- * path. Solaris would check the 'zvol' path component but this does not
- * exist in the Linux port, so we really should do something like stat the
- * file and check the major number. This is complicated by the fact that
- * we need to do this portably in user or kernel space.
- */
-#if 0
int c;
- if (vd->vdev_path && strncmp(vd->vdev_path, ZVOL_DIR,
- strlen(ZVOL_DIR)) == 0)
+#ifdef _KERNEL
+ if (zvol_is_zvol(vd->vdev_path))
return (B_TRUE);
+#endif
+
for (c = 0; c < vd->vdev_children; c++)
if (vdev_uses_zvols(vd->vdev_child[c]))
return (B_TRUE);
-#endif
+
return (B_FALSE);
}
spa_t *spa = vd->vdev_spa;
int error;
uint64_t osize = 0;
- uint64_t asize, psize;
+ uint64_t max_osize = 0;
+ uint64_t asize, max_asize, psize;
uint64_t ashift = 0;
int c;
return (ENXIO);
}
- error = vd->vdev_ops->vdev_op_open(vd, &osize, &ashift);
+ error = vd->vdev_ops->vdev_op_open(vd, &osize, &max_osize, &ashift);
/*
* Reset the vdev_reopening flag so that we actually close
}
osize = P2ALIGN(osize, (uint64_t)sizeof (vdev_label_t));
+ max_osize = P2ALIGN(max_osize, (uint64_t)sizeof (vdev_label_t));
if (vd->vdev_children == 0) {
if (osize < SPA_MINDEVSIZE) {
}
psize = osize;
asize = osize - (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE);
+ max_asize = max_osize - (VDEV_LABEL_START_SIZE +
+ VDEV_LABEL_END_SIZE);
} else {
if (vd->vdev_parent != NULL && osize < SPA_MINDEVSIZE -
(VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE)) {
}
psize = 0;
asize = osize;
+ max_asize = max_osize;
}
vd->vdev_psize = psize;
if (vd->vdev_asize == 0) {
/*
* This is the first-ever open, so use the computed values.
- * For testing purposes, a higher ashift can be requested.
+ * For compatibility, a different ashift can be requested.
*/
vd->vdev_asize = asize;
- vd->vdev_ashift = MAX(ashift, vd->vdev_ashift);
+ vd->vdev_max_asize = max_asize;
+ if (vd->vdev_ashift == 0)
+ vd->vdev_ashift = ashift;
} else {
/*
- * Make sure the alignment requirement hasn't increased.
+ * Detect if the alignment requirement has increased.
+ * We don't want to make the pool unavailable, just
+ * post an event instead.
*/
- if (ashift > vd->vdev_top->vdev_ashift) {
- vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
- VDEV_AUX_BAD_LABEL);
- return (EINVAL);
+ if (ashift > vd->vdev_top->vdev_ashift &&
+ vd->vdev_ops->vdev_op_leaf) {
+ zfs_ereport_post(FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT,
+ spa, vd, NULL, 0, 0);
}
+
+ vd->vdev_max_asize = max_asize;
}
/*
* contents. This needs to be done before vdev_load() so that we don't
* inadvertently do repair I/Os to the wrong device.
*
+ * If 'strict' is false ignore the spa guid check. This is necessary because
+ * if the machine crashed during a re-guid the new guid might have been written
+ * to all of the vdev labels, but not the cached config. The strict check
+ * will be performed when the pool is opened again using the mos config.
+ *
* This function will only return failure if one of the vdevs indicates that it
* has since been destroyed or exported. This is only possible if
* /etc/zfs/zpool.cache was readonly at the time. Otherwise, the vdev state
* will be updated but the function will return 0.
*/
int
-vdev_validate(vdev_t *vd)
+vdev_validate(vdev_t *vd, boolean_t strict)
{
spa_t *spa = vd->vdev_spa;
nvlist_t *label;
int c;
for (c = 0; c < vd->vdev_children; c++)
- if (vdev_validate(vd->vdev_child[c]) != 0)
+ if (vdev_validate(vd->vdev_child[c], strict) != 0)
return (EBADF);
/*
if (vd->vdev_ops->vdev_op_leaf && vdev_readable(vd)) {
uint64_t aux_guid = 0;
nvlist_t *nvl;
+ uint64_t txg = spa_last_synced_txg(spa) != 0 ?
+ spa_last_synced_txg(spa) : -1ULL;
- if ((label = vdev_label_read_config(vd)) == NULL) {
+ if ((label = vdev_label_read_config(vd, txg)) == NULL) {
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
VDEV_AUX_BAD_LABEL);
return (0);
return (0);
}
- if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_GUID,
- &guid) != 0 || guid != spa_guid(spa)) {
+ if (strict && (nvlist_lookup_uint64(label,
+ ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
+ guid != spa_guid(spa))) {
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
VDEV_AUX_CORRUPT_DATA);
nvlist_free(label);
!l2arc_vdev_present(vd))
l2arc_add_vdev(spa, vd);
} else {
- (void) vdev_validate(vd);
+ (void) vdev_validate(vd, B_TRUE);
}
/*
if (!vdev_readable(vd))
return (0);
- if ((label = vdev_label_read_config(vd)) == NULL) {
+ if ((label = vdev_label_read_config(vd, -1ULL)) == NULL) {
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
VDEV_AUX_CORRUPT_DATA);
return (-1);
}
if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_VERSION, &version) != 0 ||
- version > SPA_VERSION ||
+ !SPA_VERSION_IS_SUPPORTED(version) ||
nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0 ||
guid != vd->vdev_guid ||
nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, &state) != 0) {
vs->vs_rsize = vdev_get_min_asize(vd);
if (vd->vdev_ops->vdev_op_leaf)
vs->vs_rsize += VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE;
+ vs->vs_esize = vd->vdev_max_asize - vd->vdev_asize;
mutex_exit(&vd->vdev_stat_lock);
/*
/*
* Check the vdev configuration to ensure that it's capable of supporting
- * a root pool. Currently, we do not support RAID-Z or partial configuration.
- * In addition, only a single top-level vdev is allowed and none of the leaves
- * can be wholedisks.
+ * a root pool.
*/
boolean_t
vdev_is_bootable(vdev_t *vd)
{
+#if defined(__sun__) || defined(__sun)
+ /*
+ * Currently, we do not support RAID-Z or partial configuration.
+ * In addition, only a single top-level vdev is allowed and none of the
+ * leaves can be wholedisks.
+ */
int c;
if (!vd->vdev_ops->vdev_op_leaf) {
if (!vdev_is_bootable(vd->vdev_child[c]))
return (B_FALSE);
}
+#endif /* __sun__ || __sun */
return (B_TRUE);
}
vdev_propagate_state(cvd);
}
+void
+vdev_deadman(vdev_t *vd)
+{
+ int c;
+
+ for (c = 0; c < vd->vdev_children; c++) {
+ vdev_t *cvd = vd->vdev_child[c];
+
+ vdev_deadman(cvd);
+ }
+
+ if (vd->vdev_ops->vdev_op_leaf) {
+ vdev_queue_t *vq = &vd->vdev_queue;
+
+ mutex_enter(&vq->vq_lock);
+ if (avl_numnodes(&vq->vq_pending_tree) > 0) {
+ spa_t *spa = vd->vdev_spa;
+ zio_t *fio;
+ uint64_t delta;
+
+ /*
+ * Look at the head of all the pending queues,
+ * if any I/O has been outstanding for longer than
+ * the spa_deadman_synctime we log a zevent.
+ */
+ fio = avl_first(&vq->vq_pending_tree);
+ delta = ddi_get_lbolt64() - fio->io_timestamp;
+ if (delta > NSEC_TO_TICK(spa_deadman_synctime(spa))) {
+ zfs_dbgmsg("SLOW IO: zio timestamp %llu, "
+ "delta %llu, last io %llu",
+ fio->io_timestamp, delta,
+ vq->vq_io_complete_ts);
+ zfs_ereport_post(FM_EREPORT_ZFS_DELAY,
+ spa, vd, fio, 0, 0);
+ }
+ }
+ mutex_exit(&vq->vq_lock);
+ }
+}
+
#if defined(_KERNEL) && defined(HAVE_SPL)
EXPORT_SYMBOL(vdev_fault);
EXPORT_SYMBOL(vdev_degrade);
git://git.camperquake.de / zfs.git / blobdiff